US President Joe Biden plans to send an additional 20 million doses of COVID-19 vaccines authorized in the country abroad by the end of June, Bloomberg News reported, citing a senior administration official.

Biden will export vaccines from Pfizer Inc Moderna Inc or Johnson & Johnson, on top of 60 million doses from AstraZeneca Plc's vaccine he had already planned to give to other countries, Bloomberg said.

The White House did not immediately respond to a Reuters request for comment.